A job performing one of the following log-shipping operations: backing up the transaction log of the primary database at the primary server (the backup job), copying the transaction log file to a secondary server (the copy job), or restoring the log backup to the secondary database on a secondary server (the restore job). The backup job resides on the primary server; the copy and restore jobs reside on each of the secondary servers. See also: primary database, primary server, secondary database, secondary server.